Table T3. Results of point counts on volcanic rock thin sections, Site 1191.
 
Core, section,
interval (cm)
Unit Rock type Number of points Groundmass (%) Vesicles
(%)
Phenocrysts (%)
Plagioclase
Clinopyroxene
Opaques
193-1191A-







1R-1 (Piece 2, 5-7) 1 Rhyodacite 650 91.3 8.6 0.0 0.0 0.0
2R-1 (Piece 7, 42-46) 1 Rhyodacite 750 86.2 13.1 0.2 0.1 0.1
2R-2 (Piece 16, 103-106) 1 Rhyodacite 700 90.6 9.3 0.0 0.0 0.0
3R-1 (Piece 1, 4-7) 1 Rhyodacite 750 87.7 12.0 0.2 0.0 0.0
3R-1 (Piece 4, 18-21) 1 Rhyodacite 750 91.7 8.1 0.0 0.1 0.0
3R-1 (Piece 9, 51-54) 1 Rhyodacite 750 85.3 14.6 0.0 0.0 0.0

Note: Point counts were measured using a rectangular grid with a = 0.667 mm and b = 0.8 mm.